Smaller firms work closely with local schools that have strong business departments, such as the financial planning program at Texas Tech University, which has a robust intern and company matching program, or Baruch College or Fordham University.

That's still a majority, says Katharine Hayhoe, a climate scientist at Texas Tech University and co-author of A Climate for Change, which examines the global warming debate, and potential solutions, from a faith-based perspective. She says a better understanding of science has compelled senior religious leaders to join the environmental cause, even if some within their own congregations remain unconvinced.